Build (method = -2) #dp: 747 Step-3' Graph: 51 vertices and 283 arcs (0.00s) Step-4' Graph: 36 vertices and 253 arcs (0.00s) #V4/#V3 = 0.71 #A4/#A3 = 0.89 Ready! (0.00s) Optimize a model with 76 rows, 254 columns and 697 nonzeros Presolve removed 26 rows and 31 columns Presolve time: 0.00s Presolved: 50 rows, 223 columns, 612 nonzeros Variable types: 0 continuous, 223 integer (13 binary) Found heuristic solution: objective 3903.0000000 Found heuristic solution: objective 3684.0000000 Found heuristic solution: objective 3265.0000000 Optimize a model with 50 rows, 223 columns and 612 nonzeros Presolved: 50 rows, 223 columns, 612 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 3.050e+02 Factor NZ : 8.650e+02 Factor Ops : 1.766e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 2.40256357e+04 -4.09105008e+04 1.02e+05 9.09e-02 6.95e+02 0s 1 7.35797342e+03 -1.26861050e+04 1.14e+04 6.66e-16 9.75e+01 0s 2 4.01700923e+03 -1.24627635e+03 8.80e+02 5.77e-15 1.40e+01 0s 3 3.31640532e+03 1.36704459e+03 1.06e+02 1.89e-15 4.40e+00 0s 4 2.93741827e+03 2.18982475e+03 1.28e+01 7.77e-16 1.63e+00 0s 5 2.84991238e+03 2.68136329e+03 3.79e+00 4.44e-16 3.69e-01 0s 6 2.82343714e+03 2.81561681e+03 1.66e-01 3.33e-16 1.71e-02 0s 7 2.82200322e+03 2.82199338e+03 8.31e-05 4.44e-16 2.14e-05 0s 8 2.82200000e+03 2.82199999e+03 3.01e-12 3.64e-16 2.14e-08 0s 9 2.82200000e+03 2.82200000e+03 5.40e-13 2.55e-16 2.36e-14 0s Barrier solved model in 9 iterations and 0.00 seconds Optimal objective 2.82200000e+03 Root relaxation: objective 2.822000e+03, 88 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 2822.0000000 2822.00000 0.0% - 0s Explored 0 nodes (88 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 2.822000000000e+03, best bound 2.822000000000e+03, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.01 seconds Total run time: 0.02 seconds Objective: 2822 Solution: 19 x [9] 128 x [8] 19 x [3] 32 x [3, 32] 25 x [3, 22] 124 x [2] 122 x [36, 38] 136 x [37, 39] 156 x [35] 187 x [34] 185 x [23] 169 x [25] 163 x [21] 5 x [17] 28 x [7, 17] 39 x [4, 17] 13 x [17, 39] 16 x [17, 36] 188 x [29] 108 x [7, 11] 126 x [10] 57 x [1] 64 x [1, 24] 21 x [27] 54 x [5, 27] 46 x [19] 21 x [6, 19] 16 x [5, 19] 46 x [19, 30, 30] 48 x [19, 22] 32 x [18] 71 x [15, 18] 2 x [5, 18] 1 x [16, 18] 5 x [18, 32] 19 x [18, 26] 17 x [14] 5 x [13] 43 x [12] 66 x [12, 20] 3 x [33, 40] 52 x [31, 40] 72 x [28, 40] 73 x [33, 33]